Faulkes in NION uses the term "supine."  Now, I'm a bit egotistical about my vocabulary, but this one stumped me, so I had to hit the web.  It seems to be very synonymous with "gerund," but as Faulkes uses it, it doesn't seem to be.  And the web definitions seem to refer primarily to Latin.  Would someone be kind enough to help me with the meaning of this term as it applies to ON?
 
Thx,
    Alec